Letters 122.19

For this reason, Lucilius, let us keep to the way which Nature has mapped out for us, and let us not swerve therefrom. If we follow Nature, all is easy and unobstructed; but if we combat Nature, our life differs not a whit from that of men who row against the current. Farewell.

Seneca, Letters to Lucilius 122.19, translated by Richard Mott Gummere