Satan dreads nothing but ...

Satan dreads nothing but prayer. . . . The Church that lost its Christ was full of good works. Activities are multiplied that meditation may be ousted, and organizations are increased that prayer may have no chance. Souls may be lost in good works, as surely as in evil ways. The one concern of the devil is to keep the saints 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

Quotes from the same author

There is no way of learning to pray but by praying. No reasoned philosophy of prayer ever taught a soul to pray. We know not what we should pray for as we ought, and if prayer waits for understanding it will never begin. We discover by using. We learn by practice. Though a man should have all knowledge about prayer, and though he should understand all mysteries about prayer, unless he prays he will never learn to pray.
 Samuel Chadwick
Men ablaze are invincible. Hell trembles when men kindle. The stronghold of Satan is proof against everything but fire. The Church is powerless without the flame of the Holy Ghost. Destitute of fire, nothing else really counts; possessed of fire, nothing else really matters. The one vital need is fire. Without the flame and fervour of the Holy Ghost the Church will never accomplish its mission.
 Samuel Chadwick
The Church is the Body of Christ, and the Spirit is the Spirit of Christ. He fills the Body, directs its movements, controls its members, inspires its wisdom, supplies it's strength. He guides into truth, sanctifies its agents, and empowers for witnessing. The Spirit has never abdicated His authority nor relegated His power.
 Samuel Chadwick
To pray as God would have us pray is the greatest achievement of earth.
 Samuel Chadwick
Prayer is the acid test of devotion.
 Samuel Chadwick