He breathes not the fragrance of divine mysteries
whose head is not warmed by his heart.
-Wali
When the weather is hot, keep a cool mind.
When the weather is cold, keep a warm heart.
-Ajahn Brahm
You must descend from your head into your heart.
At present your thoughts of God are in your head.
And God Himself is, as it were, outside you,
and so your prayer and other spiritual exercises remain exterior.
Whilst you are still in your head,
thoughts will not easily be subdued
but will always be whirling about,
like snow in winter or clouds of mosquitoes in summer.
-Theophan the Recluse