How can you thank a man for giving you what's already yours? How then can you thank him for giving you only part of what is yours?

The first time someone shows you who they are, believe them.

Example is not the main thing in influencing others. It is the only thing.

These are people who are capable of devotion, public devotion, to justice. They meant what they said and every day that passes, they mean it more.

Challenging the meaning of life is the truest expression of the state of being human.

It's funny how humans can wrap their mind around things and fit them into their version of reality.

The first human who hurled an insult instead of a stone was the founder of civilization.

A man is not rightly conditioned until he is a happy, healthy, and prosperous being; and happiness, health, and prosperity are the result of a harmonious adjustment of the inner with the outer of the man with his surroundings.

Great men are like eagles, and build their nest on some lofty solitude.

Humanity is acquiring all the right technology for all the wrong reasons.

Human history is in essence a history of ideas.

Some people seem to fade away but then when they are truly gone, it's like they didn't fade away at all.

In many people it is already an impertinence to say 'I'.

Private passions tire and exhaust themselves, public ones never.

Men are anxious to improve their circumstances, but are unwilling to improve themselves; they therefore remain bound.

Great minds discuss ideas. Average minds discuss events. Small minds discuss people.

I just invent, then wait until man comes around to needing what I've invented.

One of the greatest diseases is to be nobody to anybody.

We may have different religions, different languages, different colored skin, but we all belong to one human race.

I can calculate the motion of heavenly bodies but not the madness of people.

Not only will we have to repent for the sins of bad people; but we also will have to repent for the appalling silence of good people.