Any alleged Christianity which fails to express itself in cheerfulness, at some point, is clearly spurious. The Christian is cheerful, not because he is blind to injustice and suffering, but because he is convinced that these, in the light of the divine sovereignty, are never ultimate.
... Elton Trueblood, The Humor of Christ

Wherever... thou shalt be, pray secretly within thyself. If thou shalt be far from a house of prayer, give not thyself trouble to seek for one, for thou thyself art a sanctuary designed for prayer. If thou shalt be in bed, or in any other place, pray there; thy temple is there.
... Bernard of Clairvaux