The possession of power inevitably spoils the free use of reason.
Man’s greatest concern is to know how he shall properly fill his place in the universe and correctly understand what he must be in order to be a man.
If justice perishes, human life on Earth has lost its meaning.
Honesty is better than any policy.
Every man is to be respected as an absolute end in himself; and it is a crime against the dignity that belongs to him as a human being, to use him as a mere means for some external purpose.
The more we come in contact with animals and observe their behaviour, the more we love them, for we see how great is their care of the young.
Without man and his potential for moral progress, the whole of reality would be a mere wilderness, a thing in vain, and have no final purpose.
How then is perfection to be sought? Wherein lies our hope? In education, and in nothing else.
In all judgements by which we describe anything as beautiful, we allow no one to be of another opinion.
Space and time are the framework within which the mind is constrained to construct its experience of reality.
The existence of the Bible, as a book for the people, is the greatest benefit which the human race has ever experienced. Every attempt to belittle it is a crime against humanity.
We assume a common sense as the necessary condition of the universal communicability of our knowledge, which is presupposed in every logic and every principle of knowledge that is not one of skepticism.
It is therefore correct to say that the senses do not err – not because they always judge rightly, but because they do not judge at all.
There is nothing higher than reason.
With men, the state of nature is not a state of peace, but war.
Innocence is indeed a glorious thing; but, unfortunately, it does not keep very well and is easily led astray.
Philosophical knowledge is the knowledge gained by reason from concepts ; mathematical knowledge is the knowledge gained by reason from the construction of concepts.
The infinitude of creation is great enough to make a world, or a Milky Way of worlds, look in comparison with it what a flower or an insect does in comparison with the Earth.
Each according to his own way of seeing things, seek one goal, that is gratification.
We can never, even by the strictest examination, get completely behind the secret springs of action.