Theory is worth but little, unless it can explain its own phenomena, and it must effect this without contradicting itself; therefore, the facts are sometimes assimilated to the theory, rather than the theory to the facts.

Falsehood is often rocked by truth, but she soon outgrows her cradle and discards her nurse.

Happiness ... leads none of us by the same route.

Were we as eloquent as angels we still would please people much more by listening rather than talking.

Our actions must clothe us with an immortality loathsome or glorious.

Levity is often less foolish and gravity less wise than each of them appears.

Logic and metaphysics make use of more tools than all the rest of the sciences put together, and do the least work.