(US) Alternative spelling of discretion is the better part of valour

If you put off doing what you ought to do, you will end up not having enough time to do it properly.

Asks someone for the Wi-Fi password.

Insistence on perfection often precludes the opportunity for something worthwhile. / Insistence on perfection precludes gradual improvement through compromises.

(usually public policy or management) Transparency about the workings of an organization prevents corruption.

(derogatory) Rhetorical question used to imply that the party addressed is out of touch with reality

Consistency may not be the key to success; changes, even minor ones, must be introduced.

The desire for money is the root cause of all evil.

The wife, not the husband, is in charge of the household.

Each person is the chief cause of their success or failure in life.