In order to receive a student visa to enter Canada, students may need to demonstrate to Canadian immigration authorities that they have the promise of sufficient funds to cover living expenses, tuition, and return travel. We normally offer financial assistance to all full-time graduate students who are without external aid, but this funding isn't sufficient to cover the considerable expenses foreign students would incur, and they must supplement this with other funding.
A further difficulty is that a good deal of the funding we have available comes from sources which allow grants to Canadian citizens and permanent residents; as a result, we are often unable to offer any financial aid to applicants from abroad. If you have the promise of sufficient funding from non-Dalhousie sources, such as a grant from your home country or your own funds, then these considerations will not be problems for you. If you apply here, you should send the Graduate Coordinator in the Philosophy Department a letter giving some idea of your prospects for external funding.