The world - this shadow of the soul, or other me - lies wide around. Its attractions are the keys which unlock my thoughts and make me acquainted with myself. I run eagerly into this resounding tumult... So much only of life as I know by experience... The true scholar grudges every opportunity of action past by, as a loss of power.

The man of genius inspires us with a boundless confidence in our own powers.

The poet knows that he speaks adequately, then, only when he speaks somewhat wildly.

Science always goes abreast with the just elevation of the man, keeping step with religion and metaphysics; or, the state of science is an index of our self-knowledge.

If there is any period one would desire to be born in, is it not the age of Revolution; when the old and the new stand side by side, and admit of being compared; when the energies of all men are searched by fear and by hope; when the historic glories of the old can be compensated by the rich possibilities of the new era?

Concentration is the secret of srength.

Life only avails, not the having lived.