"I love treason but hate a traitor." — Gaius Iulius Caesar

All men's misfortunes spring from their hatred of being alone

Hatred is increased by being reciprocated, and can on the other hand be destroyed by love.

Source: Ethics, part 3, proposition 43 (1677)

To be a real philosopher all that is necessary is to hate some one else's type of thinking.

The most deadly fruit is borne by the hatred which one grafts on an extinguished friendship

Hatred is an affair of the heart; contempt that of the head

There's nothing in this world as sweet as love, and next to love the sweetest thing is hate.

Gaius Iulius Caesar Quote