Havamal

an early sown field let no one trust, nor prematurely in a son: weather rules the field, and wit the son, each of which is doubtful;

akri ársánum trúi engi maðr né til snemma syni veðr ræðr akri en vit syni hætt er þeira hvárt

Havamal: 88, Dómi Oðins