better nature

an ounce of prevention is better than a pound of cure

Precaution and prevention of an undesirable thing is preferable to dealing with its potential consequences.

answer the call of nature

To satisfy a bodily urge to urinate or defecate.

better angels

Morally upright or otherwise positive attributes of human character.

better for it

In a more favorable position on the whole due to something, despite possible drawbacks.

better luck next time

Used to wish somebody hope in future success after a failure.

better place

Heaven; happiness after death.

better than sex

Superlative; wonderful.

build a better mousetrap

To create a new product, method, or idea that is better than an existing version of something already common or widely used.