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.

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

Read much, but not many works.

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

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.

A great relationship ... breaches the barriers of a lofty solitude, subdues its strict law, and throws a bridge from self-being to self-being across the abyss of dread of the universe.

If you cannot laugh frequently and genuinely, you have no soul.

Christ wants us to have a child's heart but a grown-up's head.

Well, all I can say is that people know I'm not saying anything out of malice.

God is an ever-present spirit guiding all that happens to a wise and holy end.

Change is continuous and the aggregate of the self is constantly shifting.

The purpose of my life had always been to free people from concern. I dubbed it, 'The church of freedom from concern,' or 'FFC.

Obviously, the ultimate dream is to be married for life.

The greatest leaders don't rule. They inspire