There are four million different kinds of animals and plants in the world. That’s four million solutions to the problem of staying alive.

People are more difficult to work with than machines. And when you break a person, he can't be fixed.

How important it is for us to recognize and celebrate our heroes and she-roes!

There is no marvel in a woman learning to speak, but there would be in teaching her to hold her tongue.

People who know little are usually great talkers, while men who know much say little.

Of mankind we may say in general they are fickle, hypocritical, and greedy of gain.

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

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

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

Human history is in essence a history of ideas.

Progress of mankind is progress of mind and intellect.

Family not only need to consist of merely those whom we share blood, but also for those whom we'd give blood.

Private passions tire and exhaust themselves, public ones never.

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

A man sooner or later discovers that he is the master-gardener of his soul, the director of his life.

Humanism and Divinity are as complementary to one another in the order of culture, as are Nature and Grace in the order of being.

Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.

Poverty is... Curable like any disease. Ignorance, dependence, inefficiency, laziness, want of the spirit of enterprise are the real real causes of poverty.

All of humanity's problems stem from man's inability to sit quietly in a room alone.

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

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