Letters 70.27

What, then? If such a spirit is possessed by abandoned and dangerous men, shall it not be possessed also by those who have trained themselves to meet such contingencies by long meditation, and by reason, the mistress of all things? It is reason which teaches us that fate has various ways of approach, but the same end, and that it makes no difference at what point the inevitable event begins.

Seneca, Letters to Lucilius 70.27, translated by Richard Mott Gummere