All the inclinations together (which can be reduced to a tolerable system, in which case their satisfaction is called happiness) constitutes self-regard, (solipsismus). This is either the self-love that consists in an excessive fondness for oneself (philautia), or satisfaction with oneself (arrogantia). The former is called particularly selfishness; the latter self-conceit.

— Immanuel Kant Critique of Practical Reason and other Works on the Theory of Ethics (1909)

More quotes by Immanuel Kant

Critique of Practical Reason (1788)

The Educational Theory of Immanuel Kant (1904)

Metaphysical Foundations of Natural Science (1786)

Critique of Pure Reason (1781)

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