Metaphysics, in whatever latitude the term be taken, is a science, or complement of sciences, exclusively occupied with mind.

An instinct is an agent which performs blindly and ignorantly a work of intelligence and knowledge.

Read much, but not many works.

Logic is the science of the laws of thought, as thought,--that is of the necessary conditions to which thought considered in itself is a subject.

In our natural body every part has a necessary sympathy with every other; and all together form, by their harmonious conspiration, a healthy whole.

Truth like a torch, the more 'tis shock, it shines.

The pursuit of knowledge is but a course between two ignorances, as human life is itself only a wayfaring from grave to grave.

Be sober, and to doubt prepense, These are the sinews of good sense.

There is a distinction, but no opposition, between theory and practice. Each to a certain extent supposes the other. Theory is dependent on practice; practice must have preceded theory.

A judgment is the mental act by which one thing is affirmed or denied of another.

Consummated science is positively humble.

It's hard not to be a winner when you are constantly pushing yourself to see how far you can go.

That is the difference between good teachers and great teachers: good teachers make the best of a pupil's means great teachers foresee a pupil's ends.

Without guilt / What is a man? An animal, isn't he? / A wolf forgiven at his meat, / A beetle innocent in his copulation.

If you keep running from me, you're never going to figure out what's really going on.

I love the flesh. I'm a pagan. "Who are they who speak evil of the clay? The very stars are made of clay like mine!"

Belief is reassuring. People who live in the world of belief feel safe. On the contrary, faith is forever placing us on the razor's edge.

Be true to yourself- and keep things simple. People complicate things

Most of the suicide hijackers came from Saudi Arabia, a place not lacking in wealth. But due to rapid population growth, the wealth per capita has fallen by about half in a generation.

In arguing one should meet serious pleading with humor, and humor with serious pleading.

Bad things do happen; how I respond to them defines my character and the quality of my life.