Ch30/ Discretion, 639-650.

You won't regret remaining silent, don't ask others to keep a secret, discretion is naturalness, refining of spirit, slowly if ever reveal intimate details of apostolate, say nothing of your ideal, oh fruitful silence, be discreet, helps avoid bad conversation aftertaste, don't seek for understood - sacrifice unnoticed, keep check on your tongue, drive results in heaven - not photos/facts/figures on earth, other holy people don't have to understand your way.    --- from The Way (1934), by Josemaría Escrivá