Joseph Priestley

The more we know of the works of God, the more we shall admire them; and the more we admire them, the more we shall be disposed to adore their Author.

The proper object of philosophy is to ascertain the laws of nature, and to apply them to the improvement of human life.

All knowledge is valuable, and all truth is important.

The great end of all our inquiries is to discover truth.

To be truly happy, we must be truly virtuous.

The greatest happiness of the greatest number is the foundation of morals and legislation.

Every man has a right to think for himself, and to speak his thoughts freely.

Error is always dangerous, and truth is always beneficial.

The progress of knowledge is the most important object of human pursuit.

The mind of man is capable of indefinite improvement.

True religion consists in the love of God and man.

The pursuit of truth is the noblest employment of the human faculties.

Life is a state of probation, and death is the entrance to a new and more perfect state of existence.

The proper study of mankind is man.

The universe is a vast and complicated machine, governed by fixed and immutable laws.

The beauty of the natural world is a constant source of delight and wonder.

The greatest good we can do to others is to assist them in the discovery of truth.

The human soul is immortal, and will exist forever.

Reason is the guide of life, and the foundation of all true religion.

The more we contemplate the works of God, the more we shall be convinced of his wisdom and goodness.