“The world will not be inherited by the strongest, it will be inherited by those most able to change.”

The most energetic workers I have encountered in my world travels are the vegetarian miners of Chile.

Building a better mousetrap merely results in smarter mice.

Often a cold shudder has run through me, and I have asked myself whether I may have not devoted myself to a fantasy.

Man, wonderful man, must collapse, into nature’s cauldron, he is no deity, he is no exception.

Even people who aren’t geniuses can outthink the rest of mankind if they develop certain thinking habits.

I love fools’ experiments. I am always making them.

I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.

Man in his arrogance thinks himself a great work, worthy of the interposition of a deity. More humble, and I believe truer, to consider him created from animals.

It is a cursed evil to any man to become as absorbed in any subject as I am in mine.

If I had my life to live over again, I would have made a rule to read some poetry and listen to some music at least once every week.

Man selects only for his own good: Nature only for that of the being which she tends.

We stopped looking for monsters under our bed when we realized that they were inside us.

Nothing exists for itself alone, but only in relation to other forms of life.

The most powerful natural species are those that adapt to environmental change without losing their fundamental identity which gives them their competitive advantage.

Such simple instincts as bees making a beehive could be sufficient to overthrow my whole theory.

In conclusion, it appears that nothing can be more improving to a young naturalist, than a journey in distant countries.

It is what it is. But, it will be what you make it.

Conviction is not merely an opinion. It is something rooted so deeply in the conscience that to change a conviction would be to change the very essence of who you are.

The ability to change constantly and effectively is made easier by high-level continuity.

Sometimes dreams change – and sometimes they don’t. Sometimes, all that changes is the road it takes to get there.

The only time we create any kind of substantive change is when we reach out to a disaffected electorate and inspire and motivate them to vote.

I’m not going to change the way people think about me, but I can say you know what? I’m not going to carry that in my backpack.

Change your life by changing your thoughts.

When people are ready to, they change. They never do it before then, and sometimes they die before they get around to it. You can’t make them change if they don’t want to, just like when they do want to, you can’t stop them.