Make an island which no flood can submerge (DhP 25)

By initiative and diligence, with self-restraint and discipline; The wise one should make an island, Which no flood can submerge.

-- DhammaPada Verse 25

Related Teachings:

Ethics, confidence, diligence precede the eightfold path (SN 46.50 - 54) - As the dawn precedes the sun, ethics, enthusiasm, confidence, right view, and diligence precede the eightfold path.

Importance of cultivating wisdom (AN 76 - 81) - A series of short teachings of the Buddha highlighting the importance of cultivation of wisdom.

Associate with a wise and sagacious person (DhP 76) - The Buddha is emphasising on the quality of a teacher who is pointing out faults, who reproves. This is said primarily with respect to the wrong views a student might be holding on to.