can you prune a magnolia tree

I prune mine when i think it's getting too big, the only downside to pruning, Is that you may lose the following years flowers, or depending on how hard you prune, have less flowers.

Gail.

Extract from one of my gardening encyclopaedias:
Cut back untidy plants and remove dead wood in late summer, or after flowering for deciduous species and in spring for evergreens. Hard prune only mature specimens; do this in Spring. Hope that helps.