Procrastination is hardly more evil than grasping impatience.

I learned to honor human beings, and I would find myself far more useless than the common laborer if I did not believe that this consideration could impart to all others a value establishing the rights of humanity.

Ingratitude is the essence of vileness.

Immaturity is the incapacity to use one's intelligence without the guidance of another.

The inscrutable wisdom through which we exist is not less worthy of veneration in respect to what it denies us than in respect to what it has granted.

Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

The schematicism by which our understanding deals with the phenomenal world ... is a skill so deeply hidden in the human soul that we shall hardly guess the secret trick that Nature here employs.