
Always do your best. What you plant now, you will harvest later.

Adventure is not outside man; it is within.

No man can be happy without a friend, nor be sure of his friend till he is unhappy.

Thankfulness is the beginning of gratitude. Gratitude is the completion of thankfulness. Thankfulness may consist merely of words. Gratitude is shown in acts.

The victor will never be asked if he told the truth.

To the world you might be one person, but to one person you might be the world

But perhaps the rest of us could have separate classes in science appreciation, the wonder of science, scientific ways of thinking, and the history of scientific ideas, rather than laboratory experience.

A man goes to knowledge as he goes to war: wide-awake, with fear, with respect, and with absolute assurance. Going to knowledge or going to war in any other manner is a mistake, and whoever makes it might never live to regret it.

Expose yourself to your deepest fear; after that, fear has no power, and the fear of freedom shrinks and vanishes. You are free.

It is a sign of wisdom to be able to set goals and then, having done so, to let them go. All that is required for success is a vision of the destination. The journey itself will reveal the means to take you there.

To enjoy the things we ought and to hate the things we ought has the greatest bearing on excellence of character.

All across the world, in every kind of environment and region known to man, increasingly dangerous weather patterns and devastating storms are abruptly putting an end to the long-running debate over whether or not climate change is real. Not only is it real, it's here, and its effects are giving rise to a frighteningly new global phenomenon: the man-made natural disaster.

It's just like when you've got some coffee that's too black, which means it's too strong. What do you do? You integrate it with cream, you make it weak. But if you pour too much cream in it, you won't even know you ever had coffee. It used to be hot, it becomes cool. It used to be strong, it becomes weak. It used to wake you up, now it puts you to sleep.

You know, there's a lot of talk in this country about the federal deficit. But I think we should talk more about our empathy deficit - the ability to put ourselves in someone else's shoes; to see the world through the eyes of those who are different from us – the child who's hungry, the steelworker who's been laid-off, the family who lost the entire life they built together when the storm came to town. When you think like this – when you choose to broaden your ambit of concern and empathize with the plight of others, whether they are close friends or distant strangers – it becomes harder not to act; harder not to help.

You can do what you have to do, and sometimes you can do it even better than you think you can.