on prayer

Every Christian needs a half hour of prayer each day, except when he is busy, then he needs an hour. [St Francis of Sales] 

Any concern too small to be turned into a prayer is too small to be made into a burden. [Corrie ten Boom]

Don't pray for lighter burdens. Pray for stronger backs. [Anonymous]

Prayer is as natural an expression of faith as breathing is of life. [Jonathan Edwards]

The one concern of the devil is to keep Christians from praying. He fears nothing from prayerless studies, prayerless work, and prayerless religion. He laughs at our toil, mocks at our wisdom, but trembles when we pray. [Samuel Chadwick]

Prayer is not overcoming God's reluctance, but laying hold of His willingness. [Martin Luther]